The scan will determine whether Ferdinand faces another long lay-off from the game.

Ferdinand came on as substitute and responded with a goal and an assist as Spurs came from behind to beat Wanderers 3-2 at White Hart Lane.

But he damaged his left ankle in the closing stages of the game, and Hoddle said: "It'll need an X-ray to see what he's done to it - it's a shame.

"Les has unfortunately twisted his ankle and we shall have to see how it is tomorrow when he has a scan. It is the same ankle he has had a slight problem with this week.

"It was on jumping and landing so it doesn't sound too good at the moment, but at least I have seen him walking after he had some ice on it and it is not as if he has had to stay in a cast.

"It is too soon to say how long Les might be out. It is always a nasty injury when you land and twist, but the fact I have seen him in the dressing room walking without crutches is a good sign and hopefully it will need no more than a week to settle down."

Hoddle thinks belief is the reason his team have moved up to fifth in the Premiership. He said: "At the start of the season we didn't have any belief in ourselves.

"But after the Manchester United game we went to Tranmere and won in the cup and got on a good run.

"We've not been as good as we were in October but we've picked up wins. That's a good sign for any club."

He said: "To score two very good goals away from home and go home with nothing is sickening.

"When you have conceded off a set play you're never happy about it. After getting back to 2-2 you don't want to concede from a set play.

"But it was a good performance overall - nobody's turned us over this season, and that's really pleasing.

"Very skilful players who people pay a lot of money for find it very difficult to break us down. That is our basic quality.

"The amount of good chances we've had tonight is the real pleasing thing away from home for me."

The performances of Michael Ricketts, who notched his 12th goal of the season, continue to please Allardyce.

He said: "When you get promoted to the Premiership you have to ask how good are your players.

"Michael has proven beyond a doubt he is good enough. The goals he gets from different areas are a great bonus for us."

But it was Teddy Sheringham who scored a dramatic 85th-minute winner to shatter Bolton and take Tottenham level on 24 points with fourth-placed Newcastle. The Tottenham captain spared the blushes of his goalkeeper Neil Sullivan, who earlier handed Bolton a 56th-minute equaliser when he allowed Rod Wallace's shot to slip through his grasp.

Sheringham's sixth goal of the season - a header from Christian Ziege's free-kick - capped a fine Tottenham fightback.

It had taken Ricketts just seven minutes to show why he is one of the Premiership's hottest young strikers.

Bruno N'Gotty picked up a poor clearance from Sullivan, and the ball was cleverly worked to Ricketts on the left edge of the box.

He did not have much of a target to aim at but buried his shot inside the post.

In the 46th minute Ferdinand saw his header rebound off the post. The loose ball hit a Bolton defender and came back off the crossbar, where Poyet was waiting to nod home his sixth goal of the season.

The drama switched immediately to the other end as Bolton were denied what looked like a penalty. Ricketts was set to shoot when Sheringham appeared to pull him down, but referee Paul Durkin waved play on. Spurs went straight up the other end and worked the ball in to Ferdinand with some slick passing.

But Bolton did not give up and they found an equaliser thanks to some unusually sloppy goalkeeping by Sullivan.

It was not the first time this season that the Scotland keeper had been guilty of gifting the opposition a goal. He was also at fault at Elland Road when Leeds came from behind to beat Spurs 2-1.

Ricketts was given a rest after 73 minutes as he was replaced by Dean Holdsworth - and the former Wimbledon striker was denied by Dean Richards six minutes from the end, the big centre-half making a fine, sliding tackle just as he was about to shoot.

Spurs went in search of the winner and found it courtesy of their inspirational captain.

Simon Davies was fouled by Mike Whitlow on the right flank, Ziege delivered the free-kick and Sheringham buried a header past Jaaskelainen to win the game for the home side.